Rock-drill



(No Model.)

. J. O. HYNDMAN.

BOOK DRILL.

No. 359,019. Patented Mar. 8, 1887.

MIKE

N FETERS Phviml-kmrtbhcn Wihingon. D, C.

UNITED STATES PATENT OFFIC JOHN G. HYNDMAN, OF MOUND VALLEY, KANSAS.

ROCK-DRILL.

SPECIFICATION forming part of Letters Patent No. 359.019, dated IVIEIICII 8, 1887,

Application filed July 3, 1886. Serial No. 207,031. (No model.)

T0 0oZZ whom it may concern:

Be it known that I, JonN G. HYNDMAN, of Mound Valley, in the county of Labette and State of Kansas, have invented certain new and useful Improvements in Bock-Drills, of which the following is a specification.

This invention relates to machines for drilling or boring; and the invention consists in a novel combination and arrangement of mechanism, as hereinafter more fully set forth.

Figure 1 is a side elevation. Fig. 2 is a trans verse vertical section on the line it w of Fig. 3, and Fig. 3 is a horizontal section on the line y y of Fig. 2. v

The object of my present invention is to produce a machine adapted to boring holes in the earth or in rock, and that can be utilized for boring holes in wood or drilling in metal, &c. In constructing my improved machine I first provide an upright rectangular frame, A, as shown in the drawings, and within this I place another but much shorter frame, B, which carries the operating or driving mechanism. The inner frame, B, is arranged to slide freely up and down within the frame A, the upright posts of the latter being rabbeted at their inner corners, as shown in Figs. 2 and 3, to form ways or guides for the frame B, though other forms of ways or guides may be substituted, if desired.

The boring or drilling shaft G has bearings in two boxes, 26, on cross-bars at the center of the movable frame B, as shown in Fig. 2, and extends from thence upward through a sleeve, 0, which has a screw-thread on its exterior, and works through a yoke, J, secured to the upper end of the frame A, said yoke having a corresponding screw-thread where the sleeve 0 passes through it, so that the sleeve can be screwed up or down, it being provided with a hand-wheel, b, at its lower end for that purpose.

The drill-shaft G has a chuck or head at its lower end for holding the drill or boring-too], the upper end of said chuck d forming a shoulder, upon which the frame B bears to force the drill down to its work as the sleeve 0 is screwed down. There is also an adjustable collar, a, on the shaft G above the frame B, which can be adjusted so that the lower end of the sleeve 0 will bear thereon, and thus, by means of the screw, bring still more pressure to bear 011 the tool whenever it may be necessary. The shaft G, as shown in Fig. 2, extends up through the sleeve 0, and has a balance-wheel, H, secured to its upper end to increase the momentum of the shaft, and the hub of this wheel H bears on the upper end of the sleeve, so that when the sleeve 0 is screwed up it will raise the shaft G, andthereby also the sliding frame B. The collar a, as shown in Figs. 1 and 2, can be adjusted at any point desired between the top of frame B and the lower end of sleeve 0, and when arranged midway, as shown, the first result of lowering the sleeve will be to simply let the weight of the frame B and its attachments bear on the drill or tool; but on screwing it down so its lower end will bear on the collar a then any desired amount of pressure can be brought to bear on the tool. So, too, by proper manipulation of the hand-wheel b, the frame B can be held suspended, so as to throw more or less of its weight on the drill or boring-tool, and thus adapt the pressure on the tool to the kind of work it has to perform or the material being operated upon.

As shown in the several figures, I mount a transverse drivingshaft, D, in the frame B, it being provided at each end with a crank, f, for operating it by hand, and at one end with a pulley, e, for operating it by power, when desired. On this shaft D, I secure a bevel gear-wheel, E,which gears into a bevel-pinion, F, on the shaft G, so that by turning the shaft D a rapid motion is imparted to the shaft G and the drill or boriugtool secured thereto.

For the purpose of securing the machine firmly in position, as will be necessary when used out of-doors, I secure to the frame A a series of rods, a, by eyes or staples, so they can be swung around to any desired position, as shown in Figs. 1 and 3. These rods are madein two parts, connected bya swivel-screw, m, by which they can be tightened up, and thus made to hold the machine firmly in position, the lower ends of said brace-rods being bent at right angles and pointed to form a book, 0, as shown in Fig. 1, so they can be readily driven into the ground, or into a log, stump, or tree, and thus serve as anchors. \Vhen it is designed to use the machine upon the ground, these hooks 0 will be flattened and made broader, as shown in the detached view, to enable them to hold more securely in the earth.

A machine constructed on this plan can be used for a variety of purposes, the tools used, of course, being varied. according to the nature of the work. By securing to the shaft G a suitable anger or tool the machine can be used to advantage in boring holes in the earth for fence-posts, and when designed for that special use the sills of the frame A should have their ends rounded off like a sled-runner, as shown at C, Fig. 2, so it can readily be drawn along on the ground where it is desired to bore the holes. This also enables it to be easily trans ported from place to place wherever it may be wanted for use. By using a suitable tool it can be used for boring holes in fence-posts, as

is necessary in constructing post-ai1d-rail fences, or for boring wood for any purpose. So, too, by using a suitable drill, it can be used for drilling holes in metal. or in stone, and by using a sectional rod composed of short lengths or pieces united by screw-joints or similar well-known means it can be used for drilling wells in rock formations.

The size or proportions of the machine will of course be varied, as desired or found con 33 venient, to adapt it to the various purposes for which it is designed.

I am aware that various machines for drilling and boring have been devised in which the shaft carrying the tool is fed to its work by a screw in one form or another, and that a patent has been granted for awell-borin g machine in which the rotating shaft has what the patentee terms an auger-funnel permanently attached, with a screw-thread on the shaft for forcing the auger into the earth; but I neither use nor claim such a device.

I am also aware that it is not new to use a swivel-screw for tightening a rod or brace, and I do not claim such a device; but,

Having thus described my invention, what I claim is 1. The herein-described boring or drilling machine, consisting of the rectangular frame A, having the rectangular frame 13 mounted therein, with the drill-rod G, provided with a chuck or socket, d, for the reception of various tools,and the operating1nechanisn1,all mounted in and carried by said frame B, substantially as shown,whereby the cutting-tool is fed to its work by gravity, as set forth.

2. In combination with the stationary frame A, provided with the tubular screw-sleeve 0, arranged to work in a nut for vertical adjustment, as shown, the gravitating frame 13, having the operating mechanism, and the drill-rod G, mounted therein, and said drill-rod being provided with the adjustable collar a, all constructed and arranged to operate substantially as and for the purpose set forth.

JOHN G. HYNDMAN.

Vituesses:

HARRY CLARK, GEORGE XV. Nrouors. 

